Promises in redux-saga

Question

I found the same question here, but without a proper answer I am looking for.

I am developing a simple application with CRUD operations. On the edit page, after the comp

Answer 1

There's a package that does exactly what the OP requested, i.e. arranges that dispatch() can return a promise: @adobe/redux-saga-promise Using it, you define a "promise action" creator via:

import { createPromiseAction } from '@adobe/redux-saga-promise'

export const fetchPostAction = createPromiseAction('FETCH_POST')

The dispatch() of a "promise action" will return a promise:

await dispatch(fetchPostAction({ id: 'post-id' }))

The saga might look like:

import { call, takeEvery }        from 'redux-saga/effects'
import { implementPromiseAction } from '@adobe/redux-saga-promise'

import { fetchPostAction } from './actions'

function * fetchPostSaga(action) {
  yield call(implementPromiseAction, action, function * () {
    const { id } = action.payload
    return yield call(apiCallToFetchPost, id)
  })
}

export function * rootSaga() {
  yield takeEvery(fetchPostAction, fetchPostSaga);
}

It will resolve the promise with the value returned by apiCallToFetchPost or reject if apiCallToFetchPost throws an error. It also dispatches secondary actions with the resolution/rejection that you can access in a reducer. The package provides middleware you have to install to make it work.

(Disclaimer, I'm the author)